In all Residential Zones, unless a more restrictive standard has been adopted within this title, accessory buildings shall meet the following requirements:
A. Quantity Allowed: Each residential lot may have up to a total of three (3) accessory buildings with a combined floor area not to exceed the maximum lot coverage allowed in the zone. The following buildings, although included in the lot coverage calculation, are not counted in the number of allowed accessory buildings:
1. One attached or detached garage or carport; and
2. Buildings that are open on a minimum of three (3) sides, limited to patio covers, trellises, cabanas, gazebos, or arbors.
B. Design: The original design of the building must have been to function as a typical accessory residential structure, such as a storage shed or carport, and not for some other use. Reuse of a metal structure originally designed or used for other purposes, such as shipping or cargo containers, is not allowed unless fully contained within an accessory building located, designed and built in compliance with this section.
C. Exterior Materials And Finish: The exterior surface of the accessory building shall be constructed of materials intended for exterior finished walls and roofs.
1. Exterior wall finish materials for a building over four hundred (400) square feet are limited to:
a. Brick, stone, or synthetic stone;
b. Wood lap, tongue and groove siding, hardiplank, or other similar siding;
c. Vinyl siding, glass, stucco or stucco appearing material; or
d. Architectural metal or other metal finish materials when the building meets all of the following criteria:
(1) The building is an accessory building to the primary use of either a single family home or agricultural use;
(2) The building is a detached structure and there are no other detached accessory structures larger than four hundred (400) square feet;
(3) On a lot with a single-family dwelling, the primary color matches the primary color of the single-family dwelling or is a neutral gray, tan, or brown;
(4) The metal exterior finish is baked-on colored enamel, powder-coated, vinyl coating, or other factory pre-finished coloring. No galvanized or bare metal or wet-painted metal surfaces are permitted;
(5) Roof types are either gabled, shed or gambrel with a minimum pitch of 4:12 and a minimum six inch (6") eave overhang;
(6) A relief feature is included on at least one side of the building that breaks up the longer side, front, or roof elevation of the building (i.e., awning, building projection, etc.) and the roof of the relief feature is of the same materials as the roof materials of the building;
(7) Corrugated metal is not allowed unless it has a squared rib, not wavy rib appearance; and
(8) Windows are located on at least two (2) of the four (4) sides of the building.
2. Exterior wall finish materials for a building under four hundred (400) square feet, in addition to the materials described in subsection C1 of this section, may also be:
a. Metal siding that has a baked enamel paint or vinyl coating;
b. Architectural metal; or
c. Rigid vinyl walls.
3. Open structures on corner lots that are otherwise allowed within the side yard setback facing a street shall be constructed of:
a. New dimensional lumber which is properly treated or of a species suitable for outdoor use; or
b. Dimensional HDPE (high density polyethylene), vinyl, or composite lumber designed for such use (e.g., Trex).
4. Roofing shall be made of materials designed for such application, including: composition asphalt/fiberglass shingles, wood shakes, slate, tile, or similar appearing materials, standing seam metal roof systems and metal shingles. Galvanized metal surfaces, reflective surfaces, or reuse of materials that are not originally designed as an exterior wall or roof finish material are not permitted.
5. The Director may allow the use of materials other than those listed above only if they are compatible with the exterior materials and finishes of the main residential building. If agreement cannot be reached on compatibility, the proposed materials/finishes shall be subject to Planning Commission review and approval.
6. The provisions of this subsection C do not supersede or nullify building design or material requirements applicable to the specific zone in which the building is located.
D. Location And Size:
1. No detached accessory building, other than trellises, shall be allowed between the front of the main residential building and the street.
2. A garage or carport attached to the main residential building is allowed between the front of the main residential building and the street if the front yard setback requirement for the zone is maintained and the garage or carport is integrated into the design of the residential building, with the same exterior wall treatment, roof slope, and roofing material as the building to which it is attached.
3. Metal accessory buildings must be located in the rear yard and shall not exceed the lesser of four hundred (400) square feet or the maximum lot coverage allowed in the zone.
4. Nonmetal accessory buildings and accessory buildings finished with architectural metal may be located in an interior side yard or rear yard provided they meet the required setbacks of the zone.
5. On a corner lot, an attached or detached accessory building (with or without a roof) that is open on at least three (3) sides may extend into the side yard setback facing a street up to the minimum side yard setback for an interior lot in its respective zone. Such structures are limited to covered or uncovered decks, patios, gazebos, pergolas, and trellises. The finished floor elevation of these structures may not be higher than eighteen inches (18") above finish grade.
6. Parking/storage of boats, trailers, campers, equipment, materials, etc., is prohibited within the side yard setback facing a street.
7. The footprint of an accessory building on a one-half (1/2) acre or smaller residential lot may not exceed the lesser of eighty percent (80%) of the footprint of the main residential building or the maximum lot coverage allowed in the zone.
8. The footprint of an accessory building on a larger than one- half (1/2) acre residential lot may not exceed the footprint of the main residential building unless authorized by a conditional use permit. In addition:
a. The accessory building may not exceed the maximum lot coverage allowed in the zone; and
b. An accessory building with a footprint greater than eighty percent (80%) of the footprint of the main residential building shall be set back from the rear and side lot lines a distance equal to the minimum required setback for main buildings in the zone.
E. Roof: An accessory building over two hundred (200) square feet shall have a pitched roof with a minimum of six inch (6") overhanging eaves or match the existing form, slope, and materials of the roof of the main residential building. The eave requirement may be modified by the Planning Commission upon finding that an exception to the eave standard is compatible with the main building and does not adversely impact the surrounding neighborhood.
F. Doors: If the building is equipped with a door or doors, the door or doors may not take up more than eighty percent (80%) of the structure's front face.
G. Height: The building shall not exceed the maximum height allowed by section 15-13-5 of this chapter.
(Ord. 2011-47, 10-18-2011; amd. Ord. 2019-12, 3-26-2019; Ord. 2022-42, 10-11-2022)